Maxim Integrated MAX6822SUK+T Microprocessor Supervisory Circuit

The MAX6822SUK+T from Maxim Integrated is a compact, highly precise microprocessor (µP) supervisory circuit designed to monitor power supplies and microprocessor activity in digital systems. It provides excellent circuit reliability and low cost by eliminating external components and adjustments when used in systems that require voltage monitoring and processor supervision.

This supervisory circuit ensures that the µP is fully reset during power-up, power-down, and brownout conditions. It also has the capability to assert a reset signal if the monitored voltage falls below its preset threshold, ensuring that the µP restarts in a known state. The MAX6822SUK+T operates with a supply voltage range from 1.2V to 5.5V, making it suitable for use in a variety of low voltage applications, including portable devices, computers, controllers, and intelligent instruments.

Key features of the MAX6822SUK+T include:

• Factory-trimmed reset threshold voltages for high accuracy
• Low supply current of 6µA (typical), which is beneficial for power-sensitive applications
• Reset output stages available in push-pull or open-drain configurations
• Guaranteed reset valid to VCC = 1.0V, catering to low-voltage operation
• Immune to short VCC transients, ensuring reliable operation under fluctuating power conditions
• Compact 5-pin SOT-23 package, ideal for space-constrained applications

The MAX6822SUK+T also features a manual reset input, allowing the user to trigger a reset independently. This is particularly useful for debugging and system maintenance purposes. Additionally, with its built-in watchdog timer, it can monitor software execution intervals and system activity, providing an extra layer of system reliability.

With its combination of features, the MAX6822SUK+T is an excellent choice for managing system integrity and ensuring consistent performance across a wide range of electronic applications. Maxim Integrated's commitment to quality means that this supervisory circuit meets the stringent requirements of complex digital systems, providing designers with a reliable and cost-effective solution for their circuit protection needs.